[PATCH 03/33] memcg: Prepare to protect against concurrent isolated cpuset change

[Tejun Heo]

On Wed, Dec 24, 2025 at 02:44:50PM +0100, Frederic Weisbecker wrote:
> +static void schedule_drain_work(int cpu, struct work_struct *work)
> +{
> +	guard(rcu)();
> +	if (!cpu_is_isolated(cpu))
> +		schedule_work_on(cpu, work);
> +}

As the sync rules aren't trivial, it'd be nice to have some comment
explaining what's going on.

Thanks.

-- 
tejun